linux-kernel - Re: [PATCH net v4] smsc911x: only update stats when interface is up

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Message-ID: <ZCZ+tFtp9NBBjiqv@ninjato>
Date:   Fri, 31 Mar 2023 08:33:24 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Steve Glendinning <steve.glendinning@...well.net>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v4] smsc911x: only update stats when interface is up


> Okay, core changes aside - does pm_runtime_put() imply an RCU sync?
> Otherwise your check in get_stats is racy...

From some light research, I can't find a trace of RCU sync. Pity, I'll
need to move furhter investigation to later. I'll report back if I have
something, but it may take a while. Thanks for the help!


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